package kr.hkit.powerjava.chapter06;

import java.util.Scanner;

public class example02 {
	public static void main(String[] args) {
		
		int grade;
		
		Scanner input = new Scanner(System.in);
		System.out.print("성적은?");
		grade = input.nextInt();
		
		if (grade >= 90)
			System.out.println("A");
		else if (grade >= 80)
			System.out.println("B");
		else if (grade >= 70)
			System.out.println("C");
		else if (grade >= 60)
			System.out.println("D");
		else 
			System.out.println("F");
		}
}

